Titlebook: Aircraft Wake Turbulence and Its Detection; Proceedings of a Sym John H. Olsen,Arnold Goldburg,Milton Rogers Conference proceedings 1971 Pl

Bridle

Transport of a Vortex Wake in a Stably Stratified Atmosphereollows one of two patterns, depending on whether Q is less than or greater than a critical value Qcrit. If Q < Qcrit, the circulation decreases more rapidly than the momentum and the vortices separate as they descend to an equilibrium level. If Q > Qcrit, the momentum of the vortices decreases more

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陈腐思想

photophobia

An Experimental Investigation of Trailing Vortices Behind a Wing with a Vortex Dissipatorce structure. Limited flight tests with a dissipater fitted to a Convair 990 wing tip and using a Lear jet aircraft as a probe indicated that the rolling acceleration and the degree of roll control required was less in the modified vortex than in the unmodified vortex.

offense

Vortex Wake Development and Aircraft Dynamicsd a 13-foot-span C-130 wind-tunnel model, mounted in a 23-foot by 16-foot working section, showed remarkable coherence until the adverse pressure gradient in the wind-tunnel diffuser caused vortex bursting. The effects, on vortex burst posi­tion in the diffuser, of auxiliary blowing into or near the

nugatory

Measurements of Boeing 747, Lockheed C5A and Other Aircraft Vortex Wake Characteristics by Tower Flyexhausts of certain aircraft with wing mounted engines..Vortex flow velocities were obtained using hot-film/hot-wire sensors..Measured tangential velocities were approximately double those velocities predicted by certain theory (which assumes an elliptical lift distribution) ..Distinct vortex charac

召集

An Assessment of Dominant Mechanisms in Vortex-Wake Decayare two distinct mechanisms advanced for vortex wake decay-- the slowing down of the vortices by mixing action of eddy viscosity, and the interaction of the vortices with each other, which disorganizes the organized vortex flow field. The slowing down by eddy viscosity is conceptually simple, but is

组成

Theoretical and Experimental Study of the Stability of a Vortex Pairs then considered in terms of the more general model for self-induced motion of the sinusoidal vortex. The presence of axial velocity within the core slightly decreases the amplification rate of the instability. Experimental results for the distortion and breakup of a perturbed vortex pair are prese

紧张过度

linguistics